Prism-telescope.



836,273. PATENTED NOV. 20, 1906.

E. NEUMAYER. PRISM TELESCOPE.

APPLICATION FILED JUNE 24.1905.

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PRISM TELESCOPE. APPLIOATION FILED mm: 24.1905.

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PATENTED NOV. 20, 1906.

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UNITED STATES FRIEDENAU, NEAR BERLIN, GERMANY,

EDMUND NEUMAYER, OF

PATENT OFFICE.

ASSIGNOR TO THE FIRM OF OPTISOHE ANSTALT (J. P. GOERZ AKTIENGESELLSUHAFT, OF FRIEDENAU,

MANY.

NEAR BERLIN, GER- PRISM-TELESCOPE.

Specification of Letters Patent.

Patented Nov. 20, 1906.

Application filed In 24,1905- Serial No. 266,704.

To all whom it may concern:

Be it known that I, EDMUND NEUMAYER, engineer, a citizen of the German Empire, and a resident of Friedenau, near Berlin, Germany, have invented certain new and useful Improvements in PrismTelescopes, of which the following is a specification.

This invention relates to a prism-telescope especially for measuring purposes; and it consists in a very strong and compact construction, depending substantially on the use of a casing for the reversing prism 0r combination of prisms having a cylindrical wall bearing on a supporting-cylinder of corresponding diameter.

The new prism-telescope is represented on the accompanying drawings, in which Figure 1 represents a vertical section through the instrument; Fig. 2, a vertical sectional view at a right angle with the section of Fig. 1.

In the drawings the letter a designates the foot part of the instrument, having suitable means for adjusting it in any desired way. The adjusting parts are shown on Fig. 1 as consisting of a ground plate q, having a ballbearing 1", embracing a ball 8, firmly connected to the instrument. Adjusting-screws t are provided for securing the correct position of the instrument with relation to the ground plate g. These adjusting means, however, do not form part of this invention, and therefore are not described in detail. The foot (1 of the instrument is provided with a cylindrical upper part Rotatably mounted on said worm-wheel forming cylinder 1) is an intermediate part c, forming a support for a casing (Z, carrying the optical elements of the telescope. The inter mediate part or support 0 is provided with a worm meshing with said worm-wheel b and carrying an adjusting-knob e and an indexdrum u. The intermediate part c has a cywith a worm-wheel gearing forming a bearing for d. The casin 61 includes the reversing prisms g h, mounte( on a suitable carrier 41, fixed to the casing (1. Connected to the casing d is a worm 7c, meshing with the said worm-wheel f of support 0 and provided with an adjusting-knob Z. sliding bearing-block '22 is provided for securing operative connection between worm 7c on its periphery and b, forming a worm-wheel.-

and the teeth of the worm-wheel on the periphery of part Block Q) is pressed against the worm k by bolt to with spring as. Tubelike parts m n of the casing d are provided as supports for the objective and ocular lenses 0 19, respectively.

The operation and use of the instrument is as follows: After adjusting the instrument on a suitable base the objective may be directed on any suitable point of the horizon by turning the support 0 on the foot part a. and adjusting the elevation by turning the casing d on the cylindrical bearing f. The use of the cylindrical wall of the casing d as bearing-surface results in a bearing-surface of large diameter, which may be very short without diminishing the solidity of the construction. At the same time this construction does away with lateral trunnions, which are not desirable in view of the compactness of the instrument. The prisms g h form a so-called Porro-prism combination. However, other suitable prism combinations or one single prism may be used adapted to effect a reversion of the image produced. by the objective of the instrument. Therefore the term prism device used in the claims includes every kind. of prism or prism combination adapted to effect a reversion of the image.

Having now particularly described and ascertained the nature of my invention and in what manner the same is to be performed, I declare that what I claim is- 1. In a prism-telescope the combination with an objective, an ocular and a prism device adapted to effect a reversion of the image, of a casing forming a carrier for said objective ocular and reversing prism, a support for said casing, vided with a cylindrical wall portion rotatably mounted on said support, the said optical elements of the instrument carried by the casing being arranged in such a manner that the optical axis of the instrument is at a right angle with the axis of rotation of said rotatable casing.

2. In a prism-telescope the combination with an objective, an ocular and a prism device adapted to effect a reversion of the images, of a casing forming a carrier for said optical elements of the instrument, namely the objective, the ocular and the reversing the casing being proprism, a support for said casing and a worm and worm-wheel connection between said casing and said casing-support, the casing being provided with a cylindrical wall por tion rotatably mounted on a cylindrical bearing-surface of said support, the optical elements of the instrument being arranged in such position that the optical axis of the instrument is at a right angle with the axis of rotation of said rotatable casing.

3. In a prism-telescope the combination with an objective, an ocular and a prism device adapted to effect a reversion of the images, of a casing forming a carrier for said optical elements of the instrument, namely the objective, the ocular and the reversing prism, a support for said casing and a carrierfoot, said casing-support forming an intermediate part between said carrier-foot and said casing and being rotatably mounted on the carrier-foot, the axes of rotation of said intermediate part and of the casing being at a right angle with each other, the optical elements of the instrument being arranged in such positionthat the optical axis of the instrument is at a right angle with the axis of rotation of said rotatable casing.

4. In a prism-telescope the combination images, of a casing forming a carrier for said optical elements of the instrument, namely the objective, the ocular and the reversing prism, a support for said casing, the casing being provided with a cylindrical wall portion rotatably mounted on said support, a worm and worm-wheel connection between said casing and said support and a carrierfoot, said casing-support forming an intermediate part between said carrier-foot and said casing and being rotatably mounted on the carrier-foot, the axes of rotation of said intermediate part and of the casing being at a right angle with each other, the optical elements of the instrument being arranged in such position that the optical axis of the instrument is at a right angle with the axis of rotation of said rotatable casing.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

EDMUND NEUMAYER.

Witnesses HENRY HASPER, WOLDEMAR HAUPT. 

